Bath/basin waste reducing to 3/4" pipe

[furnessvale]

I am fitting a standard household shower tray and handbasin on a boat. I simply hate the plastic boat and caravan offerings.

 

Does anyone have any info on coupling reducers to bring standard household pipes down to 3/4" for boat outlets?

 

Thanks.

 

George ex nb Alton retired

[ditchcrawler]

I am fitting a standard household shower tray and handbasin on a boat. I simply hate the plastic boat and caravan offerings.

 

Does anyone have any info on coupling reducers to bring standard household pipes down to 3/4" for boat outlets?

 

Thanks.

 

George ex nb Alton retired

You should find something here http://www.asap-supplies.com/marine/hose-and-pipe-fittings

[Steilsteven]

Hello George,

 

I've never been able to find suitable reducers apart from adapting a washing machine trap but they only come in 1.5''- 3/4''.

 

On PETRA the bath and basin outlets are run to a home made aluminium box with lid ( a bit like a mud box ) in standard 1.5'' and 1.25'' pipe. A 3/4'' pipe then runs from this to a whale gulper pump.

 

Keith

[Chalky]

I bought something from Midland Chandlers a few years ago that screwed onto the bottom of the basin outlet and had a barbed connection for 3/4" / 18mm pipe.

[Roger Crown]

I am fitting a standard household shower tray and handbasin on a boat. I simply hate the plastic boat and caravan offerings.

 

Does anyone have any info on coupling reducers to bring standard household pipes down to 3/4" for boat outlets?

 

Thanks.

 

George ex nb Alton retired

 

Hi George

 

One of these http://www.mcalpineplumbing.com/traps/general/domestic-appliance-accessories/1-189-straight-nozzle.html?id=30&cat=30

should work for you, you can always purchase a straight coupling to fit on to a length of standard pipe, or should fitin to a trap.

We used to purchase them from Crosslings in Salford

 

Cheers

Roger

[stagedamager]

http://www.midlandchandlers.co.uk/store/product/wd-051.aspx

 

Is One of these Any good?

[furnessvale]

Thanks for all the replies. In the end, a couple of the McAlpine fittings suggested by Roger will do the trick.

 

Less than £2 each from my local plumbing merchant. Anyone else trying to buy them mention a washing machine take off. They don't seem to understand 3/4" pipes on boats.

 

George ex nb Alton retired

[blackrose]

Boats don't necessarily need to have 3/4" waste pipes and skin fittings - a range of sizes are available. I have 1&1/2" on my kitchen and bathroom sinks. The shower is 3/4" as it has a whale gulper pump and is less prone to getting blocked, but for gravity drained sinks I'd always go bigger for the opposite reason. Once you start reducing pipes you've effectively made a funnel which is perfect for creating blockages.

 

Edited November 9, 2015 by blackrose

[furnessvale]

Boats don't necessarily need to have 3/4" waste pipes and skin fittings - a range of sizes are available. I have 1&1/2" on my kitchen and bathroom sinks. The shower is 3/4" as it has a whale gulper pump and is less prone to getting blocked, but for gravity drained sinks I'd always go bigger for the opposite reason. Once you start reducing pipes you've effectively made a funnel which is perfect for creating blockages.

All very true but my skin fittings are already in place.

 

George ex nb Alton retired